A farm business in Ireland's County Mayo is the first in the world to produce a revolutionary probiotic butter for supermarket shelves.
The Cuinneog Butter brand contains a blend of friendly bacteria, which works like other probiotic products in helping the digestive and immune systems. The Butler family in Balla near Castlebar began making butter and buttermilk products under the "Sheila's of Mayo" brand in 1989.